Genetically modified organisms or GMOs are organisms that DNA has been tampered with. Most of the time these are plants that we eat, NOT sheep wiith two heads. Corn is an example of a GMO. Corn has been tampered with in order to create it’s own pesticide. The pesticide was originally from Bacillus Thuringiensis. Scientists took the Bacillus Thuringiensis pesticide producing DNA and put it in corn’s DNA. And now we have Bt-corn.